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Bug#1124400: update-initramfs no longer includes /lib/modules/<kver>/updates directory

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  Bug#1124400: update-initramfs no longer includes /lib/modules/<kver>/updates directory james morris <morisja@gmail.com> - 2025-12-31 18:20 +0100
    Bug#1124400:  Ben Hutchings <ben@decadent.org.uk> - 2026-01-22 14:40 +0100
    Processed: Re: Bug#1124400: "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-01-22 14:40 +0100

#90622 — Bug#1124400: update-initramfs no longer includes /lib/modules/<kver>/updates directory

Package: initramfs-tools
Version: 0.148.3

* summary

update-initramfs no longer includes /lib/modules/<kver>/updates
directory, this means out of tree drivers are not loaded during boot.
I could not find reference to this behaviour change in release notes

* update-initramfs in debian 12 (initramfs-tools 0.142) includes the
updates directory when building initrd.img, example:

root@testhost:~# update-initramfs -u -v 2>&1 > /root/update.1

root@testhost:~# grep sfc /root/update.1
Adding module /lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/falcon/sfc-falcon.ko.xz
Adding module /lib/modules/6.12.51-u1-amd64/updates/dkms/sfc.ko.xz

root@testhost:~# lsinitramfs /boot/initrd.img-6.12.51-u1-amd64 | grep sfc
usr/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc
usr/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/falcon
usr/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/falcon/sfc-falcon.ko
usr/lib/modules/6.12.51-u1-amd64/updates/dkms/sfc.ko


Reference : https://man7.org/linux/man-pages/man5/depmod.d.5.html
Behaviour aligns to:  By default, depmod will give a higher priority
to a directory with the name updates


* update-initramfs in debian 13 (initramfs-tools 0.148.3) does not
include the updates directory, this means the dkms modules are not
loaded correctly at boot.

# modules are present
root@testhost:~# find /lib/modules/6.12.51-u1-amd64/ -type f | grep sfc
/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/falcon/sfc-falcon.ko.xz
/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/sfc.ko.xz
/lib/modules/6.12.51-u1-amd64/updates/dkms/sfc_char.ko.xz
/lib/modules/6.12.51-u1-amd64/updates/dkms/sfc_resource.ko.xz
/lib/modules/6.12.51-u1-amd64/updates/dkms/sfc.ko.xz


root@testhost:~# update-initramfs -uv 2>&1 > /root/update.1
root@testhost:~# grep sfc /root/update.1
<nothing>

# eventual initrd.img does not include the modules
root@testhost:~# lsinitramfs /boot/initrd.img-6.12.51-u1-amd64 | grep sfc
usr/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc
usr/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/falcon
usr/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/falcon/sfc-falcon.ko.xz
usr/lib/modules/6.12.51-u1-amd64/kernel/drivers/net/ethernet/sfc/sfc.ko.xz


* other
A very similar issue was reported here on ubutnu 24.02 ( I believe deb13 based)
https://discourse.ubuntu.com/t/update-initramfs-ignores-dkms-module/63923


* workaround
My current workaround is to install dracut fully.

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#90922 — Bug#1124400:

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Control: reassign -1 src:dracut 109-7

On Sun, 2026-01-18 at 15:51 -0500, james morris wrote:
> I have traced this to dracut-install, PR submitted to dracut-ng
> project via https://github.com/dracut-ng/dracut-ng/issues/2071

So I'm reassigning this to the corresponding Debian packages.

Ben.

-- 
Ben Hutchings
I'm always amazed by the number of people who take up solipsism because
they heard someone else explain it. - E*Borg on alt.fan.pratchett

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#90923 — Processed: Re: Bug#1124400:

Processing control commands:

> reassign -1 src:dracut 109-7
Bug #1124400 [initramfs-tools] update-initramfs no longer includes /lib/modules/<kver>/updates directory
Bug reassigned from package 'initramfs-tools' to 'src:dracut'.
No longer marked as found in versions initramfs-tools/0.148.3.
Ignoring request to alter fixed versions of bug #1124400 to the same values previously set
Bug #1124400 [src:dracut] update-initramfs no longer includes /lib/modules/<kver>/updates directory
Marked as found in versions dracut/109-7.

-- 
1124400: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1124400
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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